366445335661 has 4 divisors (see below), whose sum is σ = 373359398652. Its totient is φ = 359531272672.

The previous prime is 366445335637. The next prime is 366445335671. The reversal of 366445335661 is 166533544663.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 166533544663 = 70843 ⋅2350741.

It can be written as a sum of positive squares in 2 ways, for example, as 101818428100 + 264626907561 = 319090^2 + 514419^2 .

It is a cyclic number.

It is not a de Polignac number, because 366445335661 - 2²¹ = 366443238509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 366445335599 and 366445335608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (366445335601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3457031416 + ... + 3457031521.

It is an arithmetic number, because the mean of its divisors is an integer number (93339849663).

Almost surely, 2^366445335661 is an apocalyptic number.

It is an amenable number.

366445335661 is a deficient number, since it is larger than the sum of its proper divisors (6914062991).

366445335661 is an equidigital number, since it uses as much as digits as its factorization.

366445335661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6914062990.

The product of its digits is 13996800, while the sum is 52.

The spelling of 366445335661 in words is "three hundred sixty-six billion, four hundred forty-five million, three hundred thirty-five thousand, six hundred sixty-one".